I have the following anchors in my html template:
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To add GET parameters to a URL, you should use the ? character to introduce them (instead of the & character). The ampersand is used to add multiple variables. So your URL should look like this.
http://script.google.com/[.......]/exec?variable=data&otherVariable=otherData
So since you didn't have the ?, the URL was sanitized to eliminate those characters.
This web app that I made illustrates the difference.
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